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Cheap flights from Ottawa to London Heathrow Airport from C$ 336

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
11 Feb — 18 Feb1
1 adult

The best prices from Ottawa to London Heathrow are usually found in January or February, booked 54 days in advance, depart on a Friday or Tuesday and return on a Monday

Cheap flight deals from Ottawa to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 February 2025.

Round-trip from

C$ 854

One-way from

C$ 345

Popular in

December

Cheapest in

January

Average price

C$ 1,066

Good round-trip deal

C$ 1,013 or less

Good one-way deal

C$ 1,100 or less
Air France
  • Air France
  • 24/2-5/3
  • 2 total stops
  • 34h 15m total
  • Ottawa to London
WestJet
  • WestJet
  • 4/3
  • 1 total stop
  • 25h 35m total
  • Ottawa to London
Highest demand for flights based on searches. 2% potential increase in price (C$ 38 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 41 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Ottawa to London Heathrow.
Price to beat on a one-way flight from Ottawa to London Heathrow.

Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 February 2025.

Mon 24/25:20 p.m.YOW - LHR
1 stop9h 40mAir France
Wed 5/37:35 p.m.LHR - YOW
1 stop24h 35mAir France
Deal found 5/2C$ 854
Mon 24/25:20 p.m.YOW - LHR
2 stops12h 25mMultiple Airlines
Wed 5/311:30 a.m.LHR - YOW
1 stop32h 40mMultiple Airlines
Deal found 5/2C$ 884
Fri 21/27:05 p.m.YOW - LHR
1 stop11h 45mAir Canada
Sat 22/23:00 p.m.LHR - YOW
1 stop23h 42mAir Canada
Deal found 6/2C$ 967
Tue 25/210:30 a.m.YOW - LHR
2 stops16h 55mUnited Airlines
Wed 5/34:00 p.m.LHR - YOW
2 stops23h 28mUnited Airlines
Deal found 5/2C$ 987
Thu 24/76:55 p.m.YOW - LHR
Nonstop6h 35mLufthansa
Mon 18/82:05 p.m.LHR - YOW
Nonstop7h 20mLufthansa
Deal found 6/2C$ 1,013
Sat 15/36:20 p.m.YOW - LHR
2 stops13h 45mKLM
Mon 31/36:30 a.m.LHR - YOW
2 stops13h 35mKLM
Deal found 6/2C$ 1,014
Sun 23/25:45 p.m.YOW - LHR
1 stop14h 05mWestJet
Wed 5/32:50 p.m.LHR - YOW
1 stop14h 54mWestJet
Deal found 5/2C$ 1,094
Sun 4/57:55 p.m.YOW - LHR
1 stop10h 55mAustrian Airlines
Fri 16/57:30 p.m.LHR - YOW
2 stops26h 34mAustrian Airlines
Deal found 6/2C$ 1,150
Thu 20/36:10 p.m.YOW - LHR
2 stops19h 40mSWISS
Wed 26/38:55 a.m.LHR - YOW
2 stops16h 42mSWISS
Deal found 6/2C$ 1,167
Sun 6/45:55 a.m.YOW - LHR
2 stops22h 00mDelta
Sat 12/48:10 p.m.LHR - YOW
2 stops32h 59mDelta
Deal found 6/2C$ 1,217

Find flights from Ottawa to Heathrow within your budget

Customize your flight search to find flights from Ottawa to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 6 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 24/2

5:20 p.m.-8:00 a.m.

1 stop9h 40m

London Heathrow

Wed 5/3

7:35 p.m.-3:10 p.m.

1 stop24h 35m

C$ 854

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 20/3

6:20 p.m.-4:35 p.m.

1 stop18h 15m

London Heathrow

Wed 26/3

2:45 p.m.-4:10 p.m.

1 stop29h 25m

C$ 880

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 24/2

5:20 p.m.-10:45 a.m.

2 stops12h 25m

London Heathrow

Wed 5/3

11:30 a.m.-3:10 p.m.

1 stop32h 40m

C$ 884

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 26/3

2:45 p.m.-7:10 a.m.

1 stop12h 25m

London Heathrow

Mon 31/3

2:05 p.m.-4:25 p.m.

Nonstop7h 20m

C$ 948

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 20/3

3:11 p.m.-11:05 a.m.

2 stops15h 54m

London Heathrow

Mon 31/3

8:30 a.m.-9:35 p.m.

1 stop18h 05m

C$ 970

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/5

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

London Heathrow

Mon 12/5

2:05 p.m.-4:25 p.m.

Nonstop7h 20m

C$ 1,016

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 23/3

6:20 p.m.-10:45 a.m.

2 stops12h 25m

London Heathrow

Sun 30/3

6:30 a.m.-3:25 p.m.

2 stops13h 55m

C$ 1,017

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 6/3

9:35 p.m.-12:50 p.m.

2 stops34h 15m

London Heathrow

Sun 16/3

2:50 p.m.-8:47 p.m.

2 stops33h 57m

C$ 1,112

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 30/3

2:10 p.m.-5:50 p.m.

2 stops22h 40m

London Heathrow

Tue 8/4

6:40 p.m.-7:19 p.m.

2 stops29h 39m

C$ 1,172

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 21/2

6:10 p.m.-8:20 a.m.

2 stops57h 10m

London Heathrow

Thu 27/2

2:50 p.m.-5:22 p.m.

2 stops31h 32m

C$ 1,183

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/2

Showing 1-10 of 15 results
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Best time to book a flight from Ottawa to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ottawa to Heathrow

Get recent, data-driven insights about flights from Ottawa to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ottawa to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Heathrow. Price data was last updated on 31 January 2025.

The best time to book flights from Ottawa to London Heathrow Airport is 54 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 560). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to LHR?

Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 February 2025.

It’s typically best to fly out from Ottawa to London Heathrow Airport in the morning. Doing so could potentially save you 10% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Ottawa to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Heathrow. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Ottawa to London Heathrow Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 6 February 2025.
See what other customers who have flown with Delta, KLM and Austrian Airlines from Ottawa to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Ottawa to London Heathrow?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 0 outbound flights to London Heathrow per day from 4 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 854. Other airlines that can offer you cheap pricing are Virgin Atlantic, from C$ 880, and Air Canada, from C$ 948. Air France is 27% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Ottawa to London Heathrow Airport one-way?

    The cheapest airlines for a one-way flight from Ottawa to London Heathrow Airport are WestJet (C$ 345), Aer Lingus (C$ 897), and Air Canada (C$ 933).

  • What are the cheapest flights from Ottawa to London Heathrow Airport?

    On average you can expect to pay C$ 2,075 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 923 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 960.

  • Can I find deals for flights from Ottawa to Heathrow that include hotel bookings?

    Yes. In addition to deals on Ottawa to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Heathrow.

  • Can I find deals for business class flights from Ottawa to Heathrow?

    Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 560). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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